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drm/i915: implement WADP0ClockGatingDisable 

Found in Bspec vol4h South Display Engine Registers [CPT, PPT],
section "5.3.1  TRANS_CHICKEN_1—Transcoder Chicken Bits 1"

v2: Make it compile.

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2012-10-31 22:52:30 +01:00
parent 23670b322c
commit ce40141f55
2 changed files with 10 additions and 0 deletions
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4
drivers/gpu/drm/i915/i915_reg.h
View File

@ -3824,6 +3824,10 @@
#define TRANS_6BPC (2<<5)
#define TRANS_12BPC (3<<5)
#define _TRANSA_CHICKEN1 0xf0060
#define _TRANSB_CHICKEN1 0xf1060
#define TRANS_CHICKEN1(pipe) _PIPE(pipe, _TRANSA_CHICKEN1, _TRANSB_CHICKEN1)
#define TRANS_CHICKEN1_DP0UNIT_GC_DISABLE (1<<4)
#define _TRANSA_CHICKEN2 0xf0064
#define _TRANSB_CHICKEN2 0xf1064
#define TRANS_CHICKEN2(pipe) _PIPE(pipe, _TRANSA_CHICKEN2, _TRANSB_CHICKEN2)

6
drivers/gpu/drm/i915/intel_pm.c
View File

@ -3794,6 +3794,7 @@ static void ibx_init_clock_gating(struct drm_device *dev)
static void cpt_init_clock_gating(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int pipe;
/*
* On Ibex Peak and Cougar Point, we need to disable clock
@ -3803,6 +3804,11 @@ static void cpt_init_clock_gating(struct drm_device *dev)
I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) |
DPLS_EDP_PPS_FIX_DIS);
/* WADP0ClockGatingDisable */
for_each_pipe(pipe) {
I915_WRITE(TRANS_CHICKEN1(pipe),
TRANS_CHICKEN1_DP0UNIT_GC_DISABLE);
}
}
void intel_init_clock_gating(struct drm_device *dev)